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Questions and Answers
Which of the following is a pathological increase that can lead to decreased joint stability and decreased abductor muscles' lever arm?
Which of the following is a pathological increase that can lead to decreased joint stability and decreased abductor muscles' lever arm?
- Retroversion
- Coxa valga (correct)
- Anteversion
- Coxa vara
What is the function of the acetabular labrum in the hip joint?
What is the function of the acetabular labrum in the hip joint?
- To allow for medial rotation
- To increase joint stability (correct)
- To allow for lateral rotation
- To decrease joint stability
Which of the following is a consequence of coxa vara?
Which of the following is a consequence of coxa vara?
- Decreased joint stability and compensatory medial rotation of the lower limb
- None of the above
- Increased tensile stress and decreased compressive stress (correct)
- Compensatory lateral rotation of the lower limb
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Study Notes
- The hip joint is a synovial ball and socket joint.
- It consists of the acetabulum, head of femur, capsule, acetabular labrum, and 3 ligaments.
- The joint allows for flexion and extension, abduction and adduction, and medial and lateral rotation.
- Articular cartilage arrangement is thicker centrally for the head of femur and peripherally for the acetabulum.
- Coxa valga (pathological increase) can lead to decreased joint stability and decreased abductor muscles' lever arm.
- Coxa vara (pathological decrease) can lead to increased tensile stress and decreased compressive stress.
- Anteversion (pathological increase) can lead to decreased joint stability and compensatory medial rotation of the lower limb.
- Retroversion (pathological decrease) can lead to compensatory lateral rotation of the lower limb.
- The hip joint has a good range of motion but is controlled by the deep socket and ligaments.
- The joint is important for walking and weight-bearing activities.
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